B3734 Alvis Td21 OBD Code

OBD/2 B3734 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

B3734 Alvis Td21 Error Code Repair Process :

If your trans temp sensor circuit open or shorted to pwr or gnd check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system B3734 and engine control unit are in charge of monitoring a bunch of different trans temp sensor circuit open or shorted to pwr or gnd, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Alvis Td21 B3734 OBD2 Code

A common cause of code B3734 is the failure of Trans Temp Sensor Circuit Open or Shorted to Pwr or Gnd, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Continuous oil flow to the VCT piston chamber
Faulty Fuel injector
Engine Control Module (ECM)

B3734 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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B3734 Alvis Td21 OBD Code

B3734 Alvis Td21 Error Code Repair Process :

Common Causes of Alvis Td21 B3734 OBD2 Code

B3734 code for other Alvis cars